Coin-detector



2 Sheets-Sheet 1.

(No Model.)

E. H. GOG-K. GOIN DETECTOR.

Patented June 6, 1893.

(No Model.) 2 Sheets-Sheet 2.

E. H. COOK. com DETECTOR.

No. 498,767. Patented June 6, 1893.

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UNITED STATES ATENT OFFICE.

EDGAR H. COOK, OF BROOKLYN, NEW YORK.

COIN-DETECTOR.

SPECIFICATION forming part of Letters Patent No. 498,767, dated June 6,`1893.

Application filed September 9, 1892. Serial No.445,437. (No model.)

To @ZZ whom, it may concern:

Be it known that I, EDGAR H.l COOK, of Brooklyn, in the county of Kingsand State of New York, have invented a new and Improved Coin-Detector,of which the following is a full, clear, and exact description.

My invention relates to improvements in coin detectors such as areadapted for use in coin operated machinery, and which are arranged toguard the mouth of the coin chute and detect and reject all coins of thewrong size and all rubbish such as washers, buttons, and the like.

Theinvention consists in certain features of construction andcombinations of parts, which will-be hereinafter described and claimed.

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which similar gures of reference indicatecorresponding parts in all the views.

Figure 1 is a perspective view of the coin detector embodying myinvention, showing it applied to the case of acoin-operated machine.

`Fig. 2 is a longitudinal sectional elevation of the detector showingthe coin plate in an extended position. but with the coin plate pushedin so as to deliver coin into the slot of the machine. Fig. 4 is asectional plan of the detector. Fig. 5 is a cross section on the liney-y in Fig. 3. Fig. 6 is a longitudinal section on the line -oc in Fig.2, showing the coin plate in extended position. Fig. 7 is a brokensection on the same line as Fig. G, but with the coin plate pushed in.Fig. Sis asectional plan of a modified form of the coin detectorin whichthe coin plate is held to slide flatwise on the base plate. Fig. 9 is acentral section of the detector, as shown in Fig. 8; and Fig. 10 is across section on the line .f4-.e in Fig. 9.

The detector has a hollow rectangular case 10 with base ianges 11 whichenable it to be easily screwed to a base plate 12, a reduced end 12a ofwhich extends forward so as to form a base for the coin plate. Thedetector is screwed to the case 13 of any coin-controlled or operatedmachine so as to cover the. slot which delivers to the chute of saidmachine, and the base plate 12 is provided at a point within the casewith a slot 14 adapted to receive the kind of coin 17 which is deliv-Fig. 3 is a similar section,k

ered to the machine, and this slot registers with a slot 15 inthe case13.

On the base plate 12 and on opposite sides of the slot 14 are produced arib 18 4and an upwardly extending iiat post or support 19, these formingbetween them a slideway in which the coin plate 2O is held to slide,this plate being also adapted to slide in the slot in the front end ofthe caselO, as shown clearly in Fig. l. The coin plate has on one side arecess 2l which is oval at the top and which is of a size to receive theappropriate coin for delivery into the slot 15 of the machine. The depthof the recess is such that the coin, when placed within it, will justtill the recess and its outer face will be iiush with the side of thecoin plate. sNear the center of the recess is a hole 22 extendingthrough the plate and if too small a 'coin is placed in the recess, itwill drop through the hole.

Near the inner end of the coin plate and on one side is a lug 23 whichis shown best in Figs. 4 and 5, and this lug serves as an abutment whichlimits the outward movement of the plate, and it also acts as a guidefor the plate, the lug being held to slide on a guide rod 24 whichextends longitudinally through the case and parallel with the coinplate, the rod being supported in posts 25 and 26 which are produced onthe base plate near the ends of the case. Coiled around the rod 24behind the lug 23 is a spiral spring 27 which, when the plate is pushedinward, is compressed, and when the plate is released, the tension ofthe spring forces it outward into the position shown in Figs. 1 and 2.

On the back or outer side of the flat post 19 is secured a spring` 28,the free end of which projects slightly beyond the forward end of thepost, and secured to the free end of the spring is a detent or pawl 29which is held to move in a notch 29a in the post and is adapted tospring into the recess 21, and by engaging the wall of the recessprevent the plate 2O from being pushed inward far enoughto have therecess 2l register with the slots 14 and 15. The inner portion of thedetent or pawl 29 is inclined, as shown clearly in Figs. 6 and 7, sothat it in no wise interferes with the free outward movement of the coinplate. l

As illustrated in Figs. 1 to 7 and described IOC above, the coindetector is used as follows:- The coin to be inserted in the coin chuteis placed in the recess 21 which it exactly fills, and the plate 2O ispushed inward, the pawl 29 passing freely over the coin 17 in the recessso that it will not engage the Wall of the recess, and when the recessregisters with the slots 14 and 15, the coin drops through into thechute of the machine. If, however, the coin is too thin or a button,washer, or similar article is inserted in the recess witha View ofcheating the machine or its proprietors, the pawl 29 will spring uponthe article in the recess, as above described, but as the recess isimperfectly filled the pawl engages the outer wall of the recess, thusstopping the coin plate and preventing the said article from beingdropped into the chute ot' the machine.

As shown in Figs. S to 10, the detector is somewhat modified, but theprinciple is the same. Here the coin plate 20 slides flatwise on thebase plate l2 and beneath'a keeper or guide plate 19a. The coin platehas a hole 21a, in its outer portion, of an exact size to receive a coinand the base plate 12 and case 13 of the machine have similar holes 14aand 15, with which the hole 2l is adapted to register. The outer end ofthe coin plate is bent up, as shown at 20a to form a handle. Theoperation of the machine as shown in these Iigures, is substantiallydescribed above, and the spring pawl 29 is carried by thespring 28 whichis secured to the upper side ot' the keeper 19 and the pawl is adaptedto engage in the recess in exactly the manner above specified. d

The lug 23, guide rod 24, spring posts 25 and 2G, and spring 27 are allarranged substantially in the manner already described,

and the pressure of the spring holds the plate extended.4 The coin beinginserted in the machine is laid tlatwise in the hole 21a, the plate 20pushed inward, and it the coin is of the exact size to fill the hole thepawl 29 passes freely over the latter and the coin is deposited in theholes 1J:a and 152. If, however, the coin is too small or some othermaterial is used, the pawl will engage the wall of the hole 21 and stopthe plate from being pushed in.

It will be noticed that in both forms of the machine acoin thicker thanthe plate in which it is carried cannot be used, as the projectingportion of the coin or other article strikes the wall of the case 10.

From the foregoing description it will be seen that the appropriate coinmay be Very conveniently deposited in the chute, but that it ispractically impossible to introduce any other article.

Having thus described my invention, l claim asl new and desire to securebygLetters Patent- A coin detector, comprisingan inclosingcase adaptedto cover the slot of a macl1ine,a coin plate held to slidein and out ofthe cover, said plate having a coin-carrying recess therein to registerwith the coin slot, a guide rod held within the oase parallel with thecoin plate, a lug produced upon the coin plate and held to slide on therod, a spring arranged to press the coin plate forward, and a pa'wl heldto press on the plate and adapted to engage the recess therein,substantially as described.

EDGAR H. oooK.

Witnesses:

WARREN B. HUroI-IINsoN, C. SEDGWICK.

